1.1 Scope. The scope of this standard is the determination of the fire load and fire load density to be used as the basis for the evaluation and design of the structural fire performance of a building.
1.1.1 The determination of a design-basis fire is outside the scope of this standard.
1.1.2* This document is not intended to address facilities for storage of hazardous materials.
A.1.1.2 Examples of hazardous materials include combustible dusts, flammable and combustible liquids, flammable solids, oxidizers, and oxidizer-containing waste. Information on such occupancies is contained in NFPA 400, Hazardous Materials Code.

Using a risk framework, this standard provides a methodology for determining the fire load and fire load density to be used as the basis for the evaluation and design of the structural fire performance of a building.
Official document scope

What does NFPA 557 address?

Two methodologies are detailed: an occupancy-based density method and a survey-based method. Other coverage includes design fundamentals, development of fire loads, documentation, inspections, and maintenance.
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